Philtrum - Human Body Part

that little indent under your nose isn’t there to make it difficult to apply lipstick in the dark, but it doesn’t serve any other purpose either. The indent, called the philtrum, is just a residual reminder of your time in the womb: in utero, the two sides of your face develop independent of one another, then join at the middle. When the two sides fail to fuse properly, the result is a cleft palate, which occurs in about 1 of every 750 births. Ancient Romans found the philtrum erotic, and named that lipstick-thwarting dip in the upper lip “Cupid’s Bow.” In fact, the word philtrum comes from a Greek term meaning “love potion.”